CN115716664A - Rural sewage quality-based separate collection-recycling system and method based on nature - Google Patents

Abstract

The invention provides a nature-based rural sewage collection-resource system, including a water separation device, a severe sewage treatment area, a purification area, and a dynamic storage device; The sewage storage area for polluted water and the clean sewage area for storing clean sewage. The water diversion device can divide the sewage into heavily polluted water, lightly polluted water and clean sewage. The heavily polluted water can enter the heavily polluted sewage treatment area and/or sewage storage area , lightly polluted water can enter the sewage storage area and/or purification area, and clean sewage can enter the clean sewage area; both the sewage storage area and the severe sewage treatment area are connected to the purification area, and the purification area is connected to the clean sewage area. The invention separates and collects domestic waste water, effectively reducing the amount of domestic sewage, thereby reducing the scale and investment of sewage treatment, improving the utilization rate of rural water resources, improving rural water ecology, and being suitable for the construction and promotion of rural sewage treatment.

Description

A nature-based rural sewage collection-resource system and method

technical field

The invention relates to the field of sewage treatment, in particular to a nature-based rural sewage collection-recycling system and method.

Background technique

With the development of society, the problems of water resources, water environment and water ecology are becoming more and more prominent. Compared with cities, rural areas have the characteristics of scattered residence, relatively simple domestic water use, and non-centralized domestic wastewater discharge. The rural areas have many shortcomings in replicating urban domestic sewage treatment models.

There are two traditional domestic wastewater treatment methods. 1. The generated wastewater is directly discharged without treatment. In this treatment method, the relatively clean sewage cannot be reused, resulting in waste of resources, and the heavily polluted water is directly discharged, causing a certain degree of pollution. Environmental pollution; 2. Unified and centralized discharge to terminal sewage treatment facilities. This treatment method mixes relatively clean sewage and heavily polluted water, resulting in a large amount of sewage generated, which in turn leads to high investment and operating costs for sewage treatment facilities .

Contents of the invention

The present invention provides a nature-based rural sewage collection-resource system and method to solve the above problems.

In order to achieve the above object, technical scheme of the present invention is:

A nature-based rural sewage collection-resource system, including a water separation device, a severe sewage treatment area, a purification area, and a dynamic storage device;

The dynamic storage device includes a sewage storage area for storing lightly polluted water and/or heavily polluted water, and a clean sewer area for storing clean sewage, and the severe sewage treatment area, sewage storage area and clean sewer area are respectively connected to the Water distribution device connection;

The water dividing device can divide the sewage into heavily polluted water, lightly polluted water and clean sewage, the heavily polluted water can enter the heavily polluted sewage treatment area and/or the sewage storage area, and the lightly polluted water Can enter the sewage storage area and/or the purification area, and the clean sewage can enter the clean sewage area;

Both the sewage storage area and the severe sewage treatment area are connected to the purification area, and the purification area is connected to the clean sewer area.

Further, the water diversion device includes a heavy sewage valve, a light sewage valve and a clean water valve, the heavy sewage valve is connected to the heavy sewage treatment area, and the light sewage valve is connected to the sewage storage area, so The clean water valve communicates with the clean water area.

Further, the water diversion device also includes a main body, a water inlet pipe, a heavy sewage outlet pipe, a light sewage outlet pipe and a clean water outlet pipe, the main body has a water storage chamber, and the water inlet pipe extends into the water storage chamber and the outlet of the water inlet pipe is close to the bottom of the water storage chamber, and the heavy sewage outlet pipe, light sewage outlet pipe and clean water outlet pipe are sequentially arranged on the side wall of the main body from top to bottom and The water storage cavity is connected, the heavy sewage outlet pipe is provided with the heavy sewage valve, the light sewage outlet pipe is provided with the light sewage valve, and the clean water outlet pipe is provided with the clean water valve .

Further, the dynamic storage device includes a dynamic storage main body and a flexible water sail arranged in the dynamic storage main body, the edge of the flexible water sail is fixed in the dynamic storage main body, and separates the dynamic storage main body There are two areas, the two areas respectively constitute the sewage storage area and the clean water area, and the middle sail body of the flexible water sail can be shifted with the pressure changes on both sides.

Further, the severe sewage treatment area is an anaerobic pond, and the purification area includes biochemical ponds and ecological wetlands.

Further, the described nature-based rural sewage quality collection-resource system includes the following steps:

S1: According to the degree of pollution, the sewage is divided into heavily polluted water, lightly polluted water and clean sewage, and discharged separately;

S2: Discharge heavily polluted water to heavily polluted sewage treatment area and/or sewage storage area, discharge lightly polluted water to sewage storage area and/or purification area, and discharge clean sewage to clean sewage area;

S3: The heavily polluted water in the severe sewage treatment area is discharged to the purification area for treatment after being treated; the lightly polluted water is discharged to the purification area for treatment;

S4: Discharge the treated water in the purification area to the clean sewer area or direct resource utilization;

S5: The water in the clean water area is used as a resource.

Further, the clean sewer area can store rainwater.

Further, in S2, when the weather is cold, both heavily polluted water and lightly polluted water are discharged to the sewage storage area for storage.

Compared with the existing rural sewage treatment method, the beneficial effects of the present invention are:

(1) The present invention divides the waste water produced into heavily polluted water, lightly polluted water and clean water according to the degree of pollution before reuse, which improves the utilization rate of rural water resources and improves the rural water ecology;

(2) The waste water is collected and treated separately, which reduces the total amount of sewage, thereby reducing the investment and operating costs of sewage treatment facilities, and is suitable for the promotion of rural sewage treatment construction.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Figure 1 is a schematic diagram of a nature-based rural sewage collection-recycling system and method disclosed in an embodiment of the present invention;

Fig. 2 is a schematic diagram of a nature-based rural sewage collection-resource system and method water dividing device disclosed in an embodiment of the present invention.

In the figure: 1. Water diversion device; 11. Heavy sewage valve; 12. Light sewage valve; 13. Clean water valve; 14. Main body; 141. Water storage cavity; 15. Water inlet pipe; 16. Heavy sewage outlet pipe; 17. Light sewage outlet pipe; 18. Clean water outlet pipe; 2. Severe sewage treatment area; 3. Purification area; 4. Dynamic storage device; 41. Sewage storage area; 42. Clean sewer area; 43. Dynamic storage body ; 44, flexible water sail.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example:

A nature-based rural sewage collection-resource system, as shown in Figure 1, includes a water separation device 1, a severe sewage treatment area 2, a purification area 3 and a dynamic storage device 4;

The dynamic storage device 1 includes a sewage storage area 41 for storing lightly polluted water and/or heavily polluted water and a clean sewer area 42 for storing clean sewerage, the severe sewage treatment area 2, the sewage storage area 41 and the clean sewer area Zones 42 are respectively connected to the water distribution device 1;

The water dividing device 1 can divide the sewage into heavily polluted water, lightly polluted water and clean sewage, and the heavily polluted water can enter the heavily polluted water treatment area 2 and/or the sewage storage area 41, and the lightly polluted water can enter the heavily polluted water treatment area 2 and/or the sewage storage area 41, and the lightly polluted water Highly polluted water can enter the sewage storage area 41 and/or the purification area 3, and the clean sewage can enter the clean sewage area 42;

Both the sewage storage area 41 and the severe sewage treatment area 2 are connected to the purification area 3 , and the purification area 3 is connected to the clean sewer area 42 . Compared with the traditional buried type or other treatment facilities, the operating cost of the process of the present invention can be basically ignored, especially the maintenance requirements and costs are reduced. The scale and investment of sewage treatment; the water for washing vegetables and fruits is clean sewage, which can be directly used as resources for farmland irrigation, water landscape, greening and cleaning; polluted water is classified according to the content of oil and detergent organic matter in the water. It is heavy sewage and light sewage, and the sewage treatment is mainly natural treatment. The low-cost treatment and resource utilization of heavy sewage and light sewage have greatly improved the rural water ecology and the utilization rate of water resources.

Preferably, as shown in Figure 2, the water diversion device 1 includes a heavy sewage valve 11, a light sewage valve 12 and a clean water valve 13, the heavy sewage valve 11 communicates with the heavy sewage treatment area 2, the The light sewage valve 12 communicates with the sewage storage area 41 , and the clean water valve 13 communicates with the clean sewer area 42 . According to the law of domestic wastewater generation, manually or automatically controlled valves are used to distinguish clean sewage and polluted water, control them to enter the clean sewage pipeline and polluted water pipeline respectively, and discharge them to the clean sewage area 42 and the sewage respectively. storage area 41. In order to prevent the oil in the polluted water from floating up, an oil filter is provided in front of the clean water valve 13 to prevent oil from entering the clean water area 42 .

Preferably, as shown in Figure 2, the water distribution device 1 also includes a main body 14, a water inlet pipe 15, a heavy sewage outlet pipe 16, a light sewage outlet pipe 17 and a clean water outlet pipe 18, the main body 14 has a water storage chamber 141, the water inlet pipe 17 extends into the water storage chamber 141, and the outlet of the water inlet pipe 15 is close to the bottom of the water storage chamber 141, the heavy sewage outlet pipe 14, the light sewage outlet pipe 15 and the clean The clean water outlet pipe 16 is sequentially arranged on the side wall of the main body 14 from top to bottom and communicates with the water storage chamber 141, the heavy sewage outlet pipe 16 is provided with the heavy sewage valve 11, and the light sewage The water outlet pipe 17 is provided with the light sewage valve 12 , and the clean water outlet pipe 18 is provided with the clean water valve 13 . The water inlet pipe 15 , the heavy sewage outlet pipe 16 , the light sewage outlet pipe 17 and the clean water outlet pipe 18 are arranged to transport the polluted water and clean sewage to the sewage storage area 41 respectively. And the clean water area 42. The water storage chamber 141 can store heavy sewage, light sewage and clean water and discharge them through pipes.

Preferably, as shown in FIG. 1 , the dynamic storage device 4 includes a dynamic storage main body 43 and a flexible water sail 44 arranged in the dynamic storage main body 43, and the edge of the flexible water sail 44 is fixed to the dynamic storage In the main body 43, the dynamic storage main body 43 is divided into two areas, the two areas respectively constitute the sewage storage area 41 and the clean water area 42, and the middle sail body of the flexible water sail 44 can follow the two The position shifts due to the change of lateral pressure. By arranging the flexible water sail 44 in the middle, a pool is divided into two spaces for storing clean water and polluted water respectively. The flexible water sail 44 is in a floating state in water, the bottom is fixed, and the upper part floats on the water surface and can change its position under the action of water pressure. The bottom of the clean water area 42 can be properly anti-seepage treated (based on water quality characteristics). In the rainy season, rainwater can enter the clean water area 42 to alleviate waterlogging and store rainwater resources. Since the polluted water does not need to be stored in the rainy season, the flexible water sail 44 moves to the side of the sewage storage area 41 to increase the space of the clean water area 42 . In the cold season, due to the low purification efficiency of natural treatment methods such as anaerobic, biochemical ponds, and natural wetlands, the treatment is not up to standard. The polluted water enters the sewage storage tank and is stored until the temperature rises to an appropriate temperature. Then it enters the anaerobic, biochemical ponds, and natural wetlands. Waiting for processing. The dynamic storage device 4 realizes the storage of water resources such as rainwater and clean sewage and excess polluted water under the premise of fully utilizing the volume of the pool, and creates conditions for subsequent utilization and treatment. The dynamic storage device 4 has a high space utilization rate and low investment Low, suitable for coordinated treatment and recycling of rainwater and sewage in rural single or multi-family households and communities.

Preferably, the severe sewage treatment area 2 is an anaerobic pond, and the purification area 3 includes a biochemical pond 31 and an ecological wetland 32 . After the polluted water containing oil, cleaning agents, etc. enters the polluted water collection tank, the polluted water is treated at low cost by using natural methods such as anaerobic (septic tanks, etc.), biochemical ponds, natural wetlands, and land treatment. processing and recycling. Adopt anaerobic-biochemical pond-natural wetland-land treatment-based treatment process to treat heavily polluted water at low cost and recycle it; adopt oxidation pond-natural wetland-land treatment-based treatment process to treat lightly polluted water Treatment and recycling; water treatment and water recycling combined with water environment landscape design, suitable for the promotion of ecological village construction.

Preferably, the described nature-based rural sewage quality collection-resource system includes the following steps:

S1: According to the degree of pollution, the sewage is divided into heavily polluted water, lightly polluted water and clean sewage, and discharged separately;

S2: Discharge heavily polluted water to severe sewage treatment area, discharge lightly polluted water to sewage storage area and purification area, and discharge clean sewage to clean sewage area;

Severely polluted water is discharged to the severe sewage treatment area, which contains more organic pollutants such as oil, detergent, excrement, food residue, etc. In this embodiment, the heavily polluted sewage treatment area is an anaerobic pool, and the anaerobic pool uses The role of anaerobic bacteria causes organic matter to undergo hydrolysis, acidification and methanation, removes organic matter in wastewater, and improves the biodegradability of sewage, which is beneficial to subsequent aerobic treatment. Slightly polluted water contains less organic pollutants, but it cannot be directly used. It needs to be treated in the purification area. The purification area includes biochemical ponds and ecological wetlands. The biochemical ponds can choose aerobic ponds, anaerobic ponds and combined In the oxidation pond, the organic matter in the wastewater is mainly removed through the symbiosis of bacteria and algae. Heterotrophic microorganisms, that is, aerobic bacteria and fungi, oxidize and degrade the organic matter to generate energy and synthesize new cells. The algae are fixed by photosynthesis Carbon dioxide and intake of nitrogen, phosphorus and other nutrients and organic matter to synthesize new cells and release oxygen. The water treated through the biochemical pond enters the ecological wetland, and the water quality continues to be improved through the ecological wetland. The wetland helps to slow down the speed of the water flow. When the flow rate slows down, the poisons, impurities and nutrients in the flowing water are either absorbed by the wetland plants, or deposited and accumulated in the mud layer of the wetland, thus purifying the downstream water quality.

The sewage treatment capacity of the severe sewage treatment area decreases with the decrease of temperature. When the temperature is low, the water volume of the heavily polluted water is greater than the load of the severe sewage treatment area, and the heavily polluted water is discharged to the sewage storage area. As the temperature rises, As the weather gets warmer, the sewage treatment capacity of the severe sewage treatment area increases, and the polluted water stored in the sewage storage area is discharged to the severe sewage treatment area for treatment;

Discharge lightly polluted water to the sewage storage area and purification area. When the amount of lightly polluted water is not large, the lightly polluted water can be directly discharged to the purification area for purification; when the temperature is low, the amount of lightly polluted water exceeds the purification area for treatment When the capacity and water volume are large, lightly polluted water is discharged to the sewage storage area, and the temperature rises. When the temperature rises, the polluted water stored in the sewage storage area is gradually purified through the heavy sewage treatment area and purification area;

S3: After the heavily polluted water in the severe sewage treatment area is treated, it is discharged to the purification area for treatment; the water in the sewage storage area is discharged to the purification area for treatment;

S4: Discharge the treated water in the purification area to the clean sewer area or direct resource utilization;

S5: The water in the clean water area is used as a resource.

Preferably, the clean sewer area can store rainwater. In the rainy season, rainwater can enter the clean water area 42 to alleviate waterlogging and store rainwater resources.

Preferably, in S2, in cold weather and low temperature season, both heavily polluted water and lightly polluted water are discharged to the sewage storage area for storage. Winter sewage treatment facilities do not need thermal insulation treatment or adopt underground operation, which saves costs, is economical and environmentally friendly.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (8)

1. A rural sewage quality-based collection-recycling system based on nature is characterized by comprising a water diversion device (1), a heavy sewage treatment area (2), a purification area (3) and a dynamic storage device (4);

the dynamic storage device (4) comprises a sewage storage area (41) for storing slightly polluted water and/or heavily polluted water and a clean drainage area (42) for storing clean drainage, and the heavy sewage treatment area (2), the sewage storage area (41) and the clean drainage area (42) are respectively connected with the water diversion device (1);

the water diversion device (1) can divide sewage into heavily polluted water, lightly polluted water and clean sewage, the heavily polluted water can enter the heavily polluted water treatment area (2) and/or the sewage storage area (41), the lightly polluted water can enter the sewage storage area (41) and/or the purification area (3), and the clean sewage can enter the clean sewage area (42);

the sewage storage area (41) and the heavy sewage treatment area (2) are connected with the purification area (3), and the purification area (3) is connected with the clean sewer area (42).

2. The rural sewage quality-dividing collection-recycling system based on nature of claim 1, wherein the water dividing device (1) comprises a heavy sewage valve (11), a light sewage valve (12) and a clean water valve (13), the heavy sewage valve (11) is communicated with the heavy sewage treatment area (2), the light sewage valve (12) is communicated with the sewage storage area (41), and the clean water valve (13) is communicated with the clean sewer area (42).

3. The nature-based rural sewage quality-divided collection and recycling system according to claim 2, wherein the water dividing device (1) further comprises a main body (14), a water inlet pipe (15), a heavy sewage outlet pipe (16), a light sewage outlet pipe (17) and a clean water outlet pipe (18), the main body (14) is provided with a water storage cavity (141), the water inlet pipe (15) extends into the water storage cavity (141), the outlet of the water inlet pipe (15) is close to the bottom of the water storage cavity (141), the heavy sewage outlet pipe (16), the light sewage outlet pipe (17) and the clean water outlet pipe (18) are sequentially arranged on the side wall of the main body (14) from top to bottom and are communicated with the water storage cavity (141), the heavy sewage outlet pipe (16) is provided with the heavy sewage valve (11), the light sewage outlet pipe (17) is provided with the light sewage valve (12), and the clean water outlet pipe (18) is provided with the clean water valve (13).

4. The rural sewage quality-dividing collection and recycling system based on nature as claimed in claim 1, wherein the dynamic storage device (4) comprises a dynamic storage body (43) and a flexible water sail (44) arranged in the dynamic storage body (43), the edge of the flexible water sail (44) is fixed in the dynamic storage body (43) and divides the dynamic storage body (43) into two regions, the two regions respectively constitute the sewage storage area (41) and the clean sewer area (42), and the central sail body of the flexible water sail (44) can shift position with the pressure change on both sides.

5. The rural sewage quality-divided collection and recycling system based on nature as claimed in claim 1, wherein the heavy sewage treatment area (2) is an anaerobic tank, and the purification area (3) comprises a biochemical pond and an ecological wetland.

6. A rural sewage quality-based separate collection-resource method based on nature, which is characterized in that by using the rural sewage quality-based separate collection-resource system based on nature in any one of claims 1 to 5,

the method comprises the following steps:

s1: dividing the sewage into heavily polluted water, lightly polluted water and clean sewage according to the pollution degree, and respectively discharging;

s2: discharging the heavily polluted water to a heavily polluted water treatment area (2) and/or a sewage storage area (41), discharging the lightly polluted water to a sewage storage area (41) and/or a purification area (3), and discharging the clean sewage to a clean sewage area (42);

s3: after being treated, the heavily polluted water in the heavily polluted water treatment area is discharged to the purification area (3) for treatment; discharging the water in the sewage storage area to a purification area (3) for treatment;

s4: the treated water in the purification area (3) is discharged to a clean drainage area (42) or directly recycled;

s5: the water in the clean sewage area (42) is recycled.

7. The rural sewage quality-divided collection-recycling method based on nature as claimed in claim 6, wherein the clean sewer area (42) can store rainwater.

8. The rural sewage quality-divided collection-resource utilization method based on nature as claimed in claim 6, wherein in S2, when the weather is cold, both the heavily polluted water and the lightly polluted water are discharged to the sewage storage area (41) for storage.

Images